Lamp



FIG. 1 is a perspective view of a lamp in accordance with my new design;

FIG. 2 is a front side elevational view of the lamp shown in FIG. 1, the left side elevational view, the right side elevational view, and the rear side elevational view being identical to the front side elevational view;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines illustrate a power cord which is shown as environment and does no constitute part of the claimed invention. 

The ornamental design for a lamp, as shown and described. 